Our Kitchen Aid Cooktop (Glass, 5-burner, gas) has a knob on it that won't turn. It feels like something is stuck but none of us can figure out what is wrong with it and we haven't used it for quite awhile. Do you have any suggestions?
Serial# XG4701013

Unless the knob is just physically jammed up some how, the problem is likely in the burner gas valve itself.

Quote:

It feels like something is stuck but none of us can figure out what is wrong with it

Those valves can seize up or break internally. If it is, the affected valve should be replaced. The aluminum valves can not usually be repaired and should not even be attempted by anyone other than a licensed gas appliance service technician.

Depending on which exact burner valve is affected, a replacement valve may not even be available any longer. The only one that is (see the following link) looks to be for the right front burner or for the left rear burners.

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